wxUSE_NOTEBOOK usage.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38892 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/notebook.cpp

@@ -24,6 +24,8 @@
     #pragma hdrstop
 #endif
 
+#if wxUSE_NOTEBOOK
+
 #include  "wx/notebook.h"
 
 #ifndef WX_PRECOMP
@@ -713,3 +715,5 @@ bool wxNotebookTabView::OnTabPreActivate(int activateId, int deactivateId)
   }
   return retval;
 }
+
+#endif // wxUSE_NOTEBOOK